GHS hazard pictograms

Hazard pictograms form part of the Globally Harmonized System of Classification and Labeling of Chemicals (GHS). Two sets of pictograms are included within the GHS: one for the labeling of containers and for workplace hazard warnings, and a second for use during the transport of dangerous goods. Either one or the other is chosen, depending on the target audience, but the two are not used together.[1] The two sets of pictograms use the same symbols for the same hazards, although certain symbols are not required for transport pictograms. Transport pictograms come in wider variety of colors and may contain additional information such as a subcategory number.

Hazard pictograms are one of the key elements for the labelling of containers under the GHS, along with:[2]

an identification of the product;

a signal word – either Danger or Warning – where necessary

hazard statements, indicating the nature and degree of the risks posed by the product

precautionary statements, indicating how the product should be handled to minimize risks to the user (as well as to other people and the general environment)

the identity of the supplier (who might be a manufacturer or importer)

The GHS chemical hazard pictograms are intended to provide the basis for or to replace national systems of hazard pictograms. It has still be implemented by the European Union (CLP regulation) in 2009.

Solids which, under conditions encountered in transport, are readily combustible or may cause or contribute to fire through friction; self-reactive substances which are liable to undergo a strongly exothermic reaction; solid desensitized explosives which may explode if not diluted sufficiently

Division 4.1

Usage

Substances liable to spontaneous combustion

Substances which are liable to spontaneous heating under normal conditions encountered in transport, or to heating up in contact with air, and being then liable to catch fire

Division 4.2

Usage

Substances which in contact with water emit flammable gases

Substances which, by interaction with water, are liable to become spontaneously flammable or to give off flammable gases in dangerous quantities